配合开启串口2

32g431.ioc

@@ -39,34 +39,37 @@ Mcu.IP5=RCC
 Mcu.IP6=SYS
 Mcu.IP7=TIM6
 Mcu.IP8=USART1
-Mcu.IPNb=9
+Mcu.IP9=USART2
+Mcu.IPNb=10
 Mcu.Name=STM32G431C(6-8-B)Ux
 Mcu.Package=UFQFPN48
 Mcu.Pin0=PF0-OSC_IN
 Mcu.Pin1=PF1-OSC_OUT
-Mcu.Pin10=PA8
+Mcu.Pin10=PB11
-Mcu.Pin11=PA9
+Mcu.Pin11=PB12
-Mcu.Pin12=PA10
+Mcu.Pin12=PA8
-Mcu.Pin13=PA11
+Mcu.Pin13=PA9
-Mcu.Pin14=PA12
+Mcu.Pin14=PA10
-Mcu.Pin15=PA13
+Mcu.Pin15=PA11
-Mcu.Pin16=PA14
+Mcu.Pin16=PA12
-Mcu.Pin17=PB3
+Mcu.Pin17=PA13
-Mcu.Pin18=PB4
+Mcu.Pin18=PA14
-Mcu.Pin19=PB5
+Mcu.Pin19=PB3
-Mcu.Pin2=PA4
+Mcu.Pin2=PA2
-Mcu.Pin20=VP_IWDG_VS_IWDG
+Mcu.Pin20=PB4
-Mcu.Pin21=VP_SYS_VS_Systick
+Mcu.Pin21=PB5
-Mcu.Pin22=VP_SYS_VS_DBSignals
+Mcu.Pin22=VP_IWDG_VS_IWDG
-Mcu.Pin23=VP_TIM6_VS_ClockSourceINT
+Mcu.Pin23=VP_SYS_VS_Systick
-Mcu.Pin3=PA5
+Mcu.Pin24=VP_SYS_VS_DBSignals
-Mcu.Pin4=PA6
+Mcu.Pin25=VP_TIM6_VS_ClockSourceINT
-Mcu.Pin5=PA7
+Mcu.Pin3=PA3
-Mcu.Pin6=PC4
+Mcu.Pin4=PA4
-Mcu.Pin7=PB10
+Mcu.Pin5=PA5
-Mcu.Pin8=PB11
+Mcu.Pin6=PA6
-Mcu.Pin9=PB12
+Mcu.Pin7=PA7
-Mcu.PinsNb=24
+Mcu.Pin8=PC4
+Mcu.Pin9=PB10
+Mcu.PinsNb=26
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32G431CBUx
@@ -96,6 +99,10 @@ PA13.Mode=Serial_Wire
 PA13.Signal=SYS_JTMS-SWDIO
 PA14.Mode=Serial_Wire
 PA14.Signal=SYS_JTCK-SWCLK
+PA2.Mode=Asynchronous
+PA2.Signal=USART2_TX
+PA3.Mode=Asynchronous
+PA3.Signal=USART2_RX
 PA4.GPIOParameters=GPIO_Label
 PA4.GPIO_Label=K4
 PA4.Locked=true
@@ -235,6 +242,8 @@ TIM6.Prescaler=9
 USART1.BaudRate=115200
 USART1.IPParameters=VirtualMode-Asynchronous,BaudRate
 USART1.VirtualMode-Asynchronous=VM_ASYNC
+USART2.IPParameters=VirtualMode-Asynchronous
+USART2.VirtualMode-Asynchronous=VM_ASYNC
 VP_IWDG_VS_IWDG.Mode=IWDG_Activate
 VP_IWDG_VS_IWDG.Signal=IWDG_VS_IWDG
 VP_SYS_VS_DBSignals.Mode=DisableDeadBatterySignals

Core/Inc/usart.h

@@ -36,12 +36,15 @@ extern UART_HandleTypeDef hlpuart1;
 
 extern UART_HandleTypeDef huart1;
 
+extern UART_HandleTypeDef huart2;
+
 /* USER CODE BEGIN Private defines */
 
 /* USER CODE END Private defines */
 
 void MX_LPUART1_UART_Init(void);
 void MX_USART1_UART_Init(void);
+void MX_USART2_UART_Init(void);
 
 /* USER CODE BEGIN Prototypes */
 

Core/Src/main.c

@@ -97,6 +97,7 @@ int main(void)
   MX_TIM6_Init();
   MX_FDCAN1_Init();
   MX_LPUART1_UART_Init();
+  MX_USART2_UART_Init();
   /* USER CODE BEGIN 2 */
 
   /* USER CODE END 2 */

Core/Src/usart.c

@@ -26,6 +26,7 @@
 
 UART_HandleTypeDef hlpuart1;
 UART_HandleTypeDef huart1;
+UART_HandleTypeDef huart2;
 DMA_HandleTypeDef hdma_usart1_tx;
 
 /* LPUART1 init function */
@@ -114,6 +115,50 @@ void MX_USART1_UART_Init(void)
 
   /* USER CODE END USART1_Init 2 */
 
+}
+/* USART2 init function */
+
+void MX_USART2_UART_Init(void)
+{
+
+  /* USER CODE BEGIN USART2_Init 0 */
+
+  /* USER CODE END USART2_Init 0 */
+
+  /* USER CODE BEGIN USART2_Init 1 */
+
+  /* USER CODE END USART2_Init 1 */
+  huart2.Instance = USART2;
+  huart2.Init.BaudRate = 115200;
+  huart2.Init.WordLength = UART_WORDLENGTH_8B;
+  huart2.Init.StopBits = UART_STOPBITS_1;
+  huart2.Init.Parity = UART_PARITY_NONE;
+  huart2.Init.Mode = UART_MODE_TX_RX;
+  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+  huart2.Init.OverSampling = UART_OVERSAMPLING_16;
+  huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
+  huart2.Init.ClockPrescaler = UART_PRESCALER_DIV1;
+  huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
+  if (HAL_UART_Init(&huart2) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  if (HAL_UARTEx_SetTxFifoThreshold(&huart2, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  if (HAL_UARTEx_SetRxFifoThreshold(&huart2, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  if (HAL_UARTEx_DisableFifoMode(&huart2) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN USART2_Init 2 */
+
+  /* USER CODE END USART2_Init 2 */
+
 }
 
 void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
@@ -210,6 +255,40 @@ void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
 
   /* USER CODE END USART1_MspInit 1 */
   }
+  else if(uartHandle->Instance==USART2)
+  {
+  /* USER CODE BEGIN USART2_MspInit 0 */
+
+  /* USER CODE END USART2_MspInit 0 */
+
+  /** Initializes the peripherals clocks
+  */
+    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2;
+    PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
+    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
+    {
+      Error_Handler();
+    }
+
+    /* USART2 clock enable */
+    __HAL_RCC_USART2_CLK_ENABLE();
+
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    /**USART2 GPIO Configuration
+    PA2     ------> USART2_TX
+    PA3     ------> USART2_RX
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF7_USART2;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  /* USER CODE BEGIN USART2_MspInit 1 */
+
+  /* USER CODE END USART2_MspInit 1 */
+  }
 }
 
 void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
@@ -256,6 +335,24 @@ void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
 
   /* USER CODE END USART1_MspDeInit 1 */
   }
+  else if(uartHandle->Instance==USART2)
+  {
+  /* USER CODE BEGIN USART2_MspDeInit 0 */
+
+  /* USER CODE END USART2_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_USART2_CLK_DISABLE();
+
+    /**USART2 GPIO Configuration
+    PA2     ------> USART2_TX
+    PA3     ------> USART2_RX
+    */
+    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2|GPIO_PIN_3);
+
+  /* USER CODE BEGIN USART2_MspDeInit 1 */
+
+  /* USER CODE END USART2_MspDeInit 1 */
+  }
 }
 
 /* USER CODE BEGIN 1 */

robot

@@ -1 +1 @@
-Subproject commit 07754e024e60b4b8766b89f34581dc0738639533
+Subproject commit 0fc4bcb8ff16a6d09a47ef6b475875a724bc7e77